Endorsed by Which?

Sussex Solar Ltd

5.0

110 Reviews

Opening Hours
Today -
  • Monday 09:00–17:00
  • Tuesday 09:00–17:00
  • Wednesday 09:00–17:00
  • Thursday 09:00–17:00
  • Friday 09:00–17:00
  • Saturday - Closed
  • Sunday - Closed

Why you can trust this trader

After undergoing rigorous assessment to become endorsed, every Which? Trusted Trader agrees to our Code of Conduct. This gives consumers the reassurance that they have the best possible protection and adds an extra layer of security to ensure best practices and procedures are followed. Which? fully investigates any breaches and will take any necessary action to ensure consumer protection.

About

We are a family-owned, renewable energy company, operating since 2005. We install solar PV panels, Tesla Powerwalls, heat pumps and solar thermal (hot water) systems. We also provide a comprehensive maintenance and repair service. Based in Horsham, West Sussex we are known for our technical expertise, high standards of workmanship and excellent customer service. We preserve our great reputation by never subcontracting our work to others and we keep our installations to a geographical area that we know we can support with ongoing service.

What we do

  • Renewable energy

    • Air source heat pumps
    • Solar water heating
    • Solar panels
    • Home energy analysis
  • Electricians

    • Electrical testing services
    • Electrical installations
  • Smart Homes

  • Air conditioning contractors

  • More Services

    • tesla powerwall
    • energy storage
    • solar pv
    • energy batteries

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

5.0
110 reviews
Customer Service
5.0
Quality
5.0
Value
4.9
Sort by
Solar Panel and Battery installation
Wonderful service all the way from the sight survey to the installation and Andy's visit to sign everything off. We choose Sussex Solar after a lot of research because they keep everything 'In House' and unlike the big companies do not use sub contractors. This meant a seamless and quick installation with high quality workmanship. Everybody from the Charlotte in the office to the installation team were extremely helpful and professional. We will be back for a heat pump next. Thank you
Customer in Surrey Posted on 07/11/2025 (Reviewer did not use service)
Industry experts!
Customer Service
Quality
Value
Sussex solar recently installed a heat pump, solar panels and battery for us. The service from start to finish was incredibly professional and we are so pleased with the finished result. The team were so reliable - turning up when they said they would to undertake whatever task they had communicated in advance they would be there to do. Would highly recommend this team of clear industry professionals who really know their stuff!
Customer in West Sussex Posted on 05/11/2025 , work completed 01/08/2025
The trader replied (on 07/11/2025)
Thank you for your kind words! It was a pleasure to work alongside you on your renovation project and we look forward to supporting your solar PV and heat pump systems going forward.
Wonderful service!
Customer Service
Quality
Value
After looking around, I chose Sussex Solar Ltd to install a Tesla Powerwall and a 3.6 kW solar PV array on our garage roof. The entire process, from the initial visit to the installation day and post-install care, was incredibly smooth and trouble-free—a truly top-notch service all around. On the day of the installation, six engineers were sent, which ensured the process went very smoothly and efficiently. I am very pleased with my installation and would highly recommend this company to anyone considering getting solar.
Customer in Posted on 27/10/2025 , work completed 16/10/2025
The trader replied (on 28/10/2025)
Thank you for your kind words. We are delighted you found everything so smooth and efficient.
Thoroughly professional installation and team
Customer Service
Quality
Value
Thoroughly professional installation from start to finish. From the initial meeting to the final handover, dealing with Sussex Solar has been a very positive experience. Everyone we dealt with, from the office/customer service side to the team on site, was efficient, polite and considerate. A simple example: we decided we wanted to move the EV charger, not a problem. I was expecting to fill in the old drill holes once they had finished, as it was my mess-up. I got home to find that Wes had done it, and colour-matched the mortar with the brick! That level of detail was consistent throughout the process. Thoroughly recommended.
Customer in West Sussex Posted on 26/10/2025 , work completed 15/10/2025
The trader replied (on 28/10/2025)
Thank you for your review and we have shared your kind words with our team, Wes in particular, who went the extra mile with colour-matching your mortar. It is always a pleasure to receive feedback on our team's attention to detail, so thank you again.
Solar Panel selection and installation
Customer Service
Quality
Value
Sussex Solar were very helpful in discussing options for solar panels, and, over many weeks, looking at various different tariffs. The installation and commissioning was quick and efficient. I would recommend them to anyone for their attentive customer service.
Customer in East Sussex Posted on 01/10/2025 , work completed 01/01/2025
The trader replied (on 28/10/2025)
Thank you for your recommending us and for your kind words about our efficiency and attentive customer service.
Really good family business providing excellent service
Customer Service
Quality
Value
Having previously purchased an EV we were keen to further improve our green credentials. We were anxious to find an installer we could trust as it appears a minefield. Fortunately a friend of my wife recommended their services as she knew them well and her parents had been delighted with their work. From the first contact they were polite and efficient arranging for Andy (owner) to visit shortly afterwards with a colleague. They spent an hour explaining and answering questions we had, so we felt we had a thorough understanding of the systems and options available. A detailed survey and assessment was carried out and detailed report provided. A tailored installation schedule was agreed, initially proceeding with solar panels and battery followed 5 months later (at our request) by the air source heat pump. The whole installation team were very efficient, friendly and professional throughout tidying up at the end of each day and providing detailed explanations for use of the system. We have been transfixed and delighted with the performance of the solar panels and battery and are hopeful and confident the Air Source Heat Pump will perform as expected over the winter. Many thanks to all the team who genuinely seem to care about the service provided.
Customer in Kent Posted on 25/09/2025 , work completed 13/03/2025
The trader replied (on 29/10/2025)
Thank you for taking the time to write such a thorough review about our solar and heat pump installations on your property. We were delighted to be recommended by your friend and we completely relate to being transfixed by the data generated by these technologies!
Good Work
Customer Service
Quality
Value
Absolutely Splendid job, they came to carry out the installation of the solar panels and battery system when they they had said. The staff where very polite and helpful, after completion I was contacted to say that they would be returning as when the photographs of the panel installation were viewed that they where not central on the roof. They returned centralised the panels looks great. Highly recommend them.
Customer in West Sussex Posted on 15/09/2025 , work completed 17/07/2025
The trader replied (on 29/10/2025)
Thank you for your lovely comments about our work. As you said, our Technical Director was not completely satisfied with the alignment of the panels and asked our team to make adjustments so everything was absolutely perfect before signing off your installation.
Look no further for solar & air source - an excellent business!
Customer Service
Quality
Value
Well, I can’t sing the praises of Sussex Solar enough. We used them to install a heat pump and solar in our 1970s 4 bed property, and we are really pleased with the results. It is a minefield out there with so many start ups 'having a go' at offering these services but lacking the expertise and experience. National organisations offer attractive deals but outsource the installation and lack customer service. I was really impressed with the reviews of Sussex Solar on 'Which', and they fully deserve their outstanding score. This is a business with integrity who will only recommend a product if it works for your situation. One reviewer had pointed out that you may pay more than the best offers out there, but the quality of service and peace of mind is worth it, and I completely agree. We went with Sussex Solar expecting a personal, professional and market leading service from a hard working family firm - this is exactly what we got. They are perfectionists. Every one of the team was impressively professional and a pleasure work with. Excellent communication within the business and with us. Andy the boss was meticulous in his approach, and the apprentices who are fortunate enough to work for this firm are highly educated, personable, knowledgeable, and have an intuitive understanding of heat pump and solar systems which they convey with confidence and in a way that is easy to understand. Thoroughly recommend.
Customer in West Sussex Posted on 07/09/2025 , work completed 22/08/2025
The trader replied (on 29/10/2025)
Thank you for your kind words. As you noticed, we are shameless perfectionists and it is very rewarding when people recognise the lengths we go to with our workmanship.
Solar installation - A great experience throughout!
Customer Service
Quality
Value
A great experience from beginning to end - We went from no solar to being fully off-grid in under a week with Sussex Solar. All members of the team were very communicative and helpful throughout. The team organising the install kept me up to date every step of the way and the fitters worked incredibly hard to get everything installed in just a few days - even with heavy rain! Finally, having Andy come around to do the final checks and take the time to explain how everything works rounded out a very good experience - would happily reccommend to anyone looking to get Solar installed.
Customer in West Sussex Posted on 13/08/2025 , work completed 01/08/2025
Relief at last!
Customer Service
Quality
Value
I contacted Sussex Solar as a Trusted Trader 6 months ago as an elderly relative was being hounded & scammed by solar / green energy companies on a regular basis. From the moment I asked for help they have been amazing. The reassurance of speaking to reputable, honest people has been such a relief. They assessed the PV system, advised the best way forward, removing unnecessary/incorrectly installed equipment in a professional manner leaving the system safe at last. The WHOLE team have been amazing. Communication by both phone & email has been patient (steep learning curve on my part!), professional, helpful & transparent - I have felt totally supported through the process and what has been a very stressful period. I cannot recommend them highly enough.
Customer in Hampshire Posted on 09/07/2025 , work completed 07/07/2025